Frank sloan



(No Model.)

F. SLOAN.

PUMP POR OIL TANKS. y No. 272.340. 'l Patented Feb. 13,1883.'

PET Pho mphenwnhingmmn,

UNITED STATES PATENT OEEMICE.-

' FRANK SLOAN, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE ADAMS & WEST- LAKE MANUFACTURING COMPANY, OF SAME PLACE.

SPECIFICATION forming part of Letters Patent No. 272,340, dated February 13, 1883,

l Application filed September?, 1882. (Nomodel.)

To all whom it may concern Be it known that I, FRANK SLOAN, a citizen of the United States, residing at the citya of Chicago, in the county ot' Cook, in the State of Illinois, have invented certain new and usevful Improvements in Pumps for Oil-Tanks,

which are fully set forth in the following specification, reference being had to the accompanying drawings, iuwhich- Figure 1 is a top view ot' an oil-tank having my improved pumps, the lid being turned back. Fig. 2-is a section Von the line w :v in Fig. 1. Fig. 3 is a section on the line yvy in Fig2'.

The same letters denote the' same parts in all the figures.

My invention relates to pumps, and more especially to pumps adapted to usein connection with tanks for the storage and dischargev of petroleum and similar liquids; and it consists in the several devices and combinations of devices which will be fully described hereinafter, and definitely pointed outin the claims, the object being to promote convenience, cleanliness, and perfect operation inthe drawing of petroleum and similar liquids for use.

Inthe drawings, A deng'tes the tank or receptacle for the-petroleum or other liquid. It is represented as cylindrical, but may be rectangular, or of any form preferred. It may be made of any suitable material. VIt is pro-` vided with a hinged lid, A',lwhich, as represented in the drawings,'constitutes about three-fourths of its top. It is also closed at a short distance below this lid by a diaphragm, a,

of the same form as the. lid, and an upright partition, a', extending from the straight edge of the diaphragm to the fixed portion A2 of 'the top. or either of them, might eXtend'all the way across without essentially varying the construction. A hole near the middle of the diaphragm gives access to the interior of the tank. for the purpose of iillin g or cleaning, and is closed by a basin-shaped cover, B,with a ,bottom perforated to allow any oil that may accidentally drip on the diaphragm to return to the-interior of the can. The perforations serve also to maintain a pressure of air -on the surface of the oil in the can. By means of this diaphragm a au inclosed compartment for Of course the lid andthe diaphragm,

the filling and discharging apparatus is pro vided in the upper part ot' the tank; and thus the drip incident to these operations is all contined` within the tank itself.

'lwo upright tubes diametrically opposite each other rest on the bottom A3 of the tank. A short distance above their lower ends they are connected by a horizontal tube, C. Ot' the upright tubes, one, D, extends a little above the diaphragm a. Several openings, d, are cut in its wall at the bottom, terminating below the point where the horizontal tube enters it.

Immediately above these openings, and just below the horizontal tube, is a valve, d', open; ing upward only. Above thevalve a piston, d2, is operated by a piston-rod, d3. That part of the wall of the tubel) which projects above the diaphragm a is threaded on the outside, and is 'covered by a cap, D', correspondingly threaded on its inner side, and having in its upper surface an apertureju'stlarge enough for the piston-rod to pass' easily through. The piston-rod carries about midway of its length a diaphragm, d4, which limits its upward stroke,

vand thus prevents the piston from being brought so nearthe top of the tube as to throw out above the diaphragm a the oil which may have got above the piston. Perforations d5 in the upper partV of the tube D., but below the diaphragm a, allow this oil to return to the reservoir,'which should never be iilled quite to the level of these perforations. The other upright tube, E, is of about twice the diameter of the tube D, and extends about half-way up to the diaphragm a. It is closed just above the horizontal tube C by a diaphragm, e, in which there is an upwardly-opening valvee.

Another upright tube, F, about equal in diameter to the`tube D,- rests on the diaphragm e, its lower part being cut away on one side enough to allow free motion to the valve. Like the tube D, it extends through the upper -to allow the opening of the valve e. At its lower end this tube Gr is surrounded by a diadiaphragm, a, andv is closed at the top by a vroo 2 I 27am() phragm, G', of india-rubber or other suitable material, which ts snugly within the tube F, though with a moderate degree offorce it may be moved up or down or turned. It is made fast to the pipe G. The opening in the screwcap F also admits of an upward and downward and revolving motion of the pipe, the pressure of thediaphragm G against the walls of the tubeF being, however, sufficient to hold the pipe G in any position against accidental shifting. At its upper end the pipe G is bent into a horizontal and then into a downward direction, so as to form a spout. The upper end of the tube Eis closed around the tube F.

The operation of the mechanism described is as follows: The piston d2 being lifted, the pressure of air on the surface ot' the oil in the tank forces oil through the openings d to ll the vacuum thus made in the tube D. The piston being pressed down again, the backward tlow of oil thus caused in tne tube I) closes the valve d', and is necessarily directed into thc horizontal tube C and into the lower part of' the tube E, lifting the valve e and partly tilling that part ot' tlie tube which is above the diaphragm e. Successive strokes of the piston force more and more oil into the tubes E and F above the diaphragm e, the valve c not sut'- fering any to return, and the air in the upper part of the tubeE promoting by its pressure a steady tlow up through the outlet-pipe G. This outlet-pipe maybe adjusted at any height that may be found suitable for the vessel to be filled, and it may be turned in the tube F, so that its spout end shall point in any direction that may be found convenient.

Instead of being adjustable and bent, as described,atitsupperend,theoutlet-pipeGmight be fixed, having a exible tube of india-rubber or other suitable material attached to its upperend. Thetube F, whose principalobject is to'aii'ord a bearing for the motion ot' the pipe G, might in that case be dispensed with. The construction shown in the drawings is, however, neater and more convenient.

It' the pipe G be constructed with the iexible tube, when the latter is not in use its nozzle G2 may be slipped over a short tube, H, projecting from the upper diaphragm, a, and opening into the interior ofthe tank, and the drip of the flexible tube will thus be returned t0 the tank.

What I claim as my invention, and desire to secure by Letters Patent, is-

1. The stationary discharge-tube F, provided with the perforated cap F', in combination with the adjustable discharge-tube G, arranged within it,but not in contact with it, and provided with the elastic diaphragm G', of diameter sniiicient to till the space between the two tubes, substantially as and for the purpose described.

2. The tube E, provided with the diaphragm e and upwardly-opening valve e', the tube F,

extending from the diaphragm to the top of the reservoir, the outlet-pipe G, provided with the diaphragm G, and means for forcing oil into the tube E below the diaphragm e, all constructed, arranged, and operating in combination, substantially as and for the purposes described.

3. The pump-tube D, provided with the upper openings, d5, in combination with the piston di, and piston-rod d3, provided with the diaphragm d4, substantially as and for the pur pose described.

FRANK SLGAN.

Witnesses:

JNO. C. MACGREGOR, Jus. LEE CoBUnN. 

